Science Ticker
A roundup of research and breaking news
- Materials Science
Graphene-based material prevents blood clots
When researchers coated a plastic film with the new material, clotting was greatly reduced and continued even after three days.
- Genetics
Origin of Tibetans’ high-altitude adaptations found
Mixing genes of two ancestral populations gave modern Tibetans their ability to withstand high altitude.
- Chemistry
Swapping electrolytes could prevent big battery fires
Researchers now say they have designed a nonflammable lithium ion battery that is as effective as what is already in use.
- Astronomy
Oldest star provides hints about first supernovas
The chemical composition of star SMSS J031300.362670839.3 and four others suggests that the explosions of the early universe weren't big enough to seed galaxies with iron.
- Materials Science
Graphene strands free electrons from resistance
Ribbons of carbon can form electron freeways, potentially paving the way to new kinds of electronics.
- Planetary Science
Asteroid shows its inner differences
The peanut-shaped space rock is more compact on one side than on the other.
- Genetics
Chemical changes to genes make twins’ pain differ
Chemical changes to genes may make identical twins experience pain differently.
- Life
Mosquito sperm may sense smells
Mosquitoes’ sperm may have chemical sensors that detect odors similar to the way the insect’s antennae sort smells.
- Humans
DNA suggests humans moved back into Africa
About 3,000 years ago, human populations from western Eurasia migrated back into eastern Africa, specifically Ethiopia.
- Neuroscience
Football helmet redesign can reduce concussion risk
No helmet will ever eliminate the risk of sustaining a concussions during a football game. But tweaking the design may slow the speed of head movements after a hit and reduce the risk of brain trauma.
- Health & Medicine
Tumors grow faster in cancer-prone mice given vitamins
The tumors killed the mice twice as fast as early-stage lung lesions in mice not given the antioxidants, researchers report.
- Health & Medicine
H7N9 flu makes a comeback
Scientists warn that the risk that the illness could spread remains.
